Diff Checker
Compare two texts and see exactly what changed. Additions, deletions, and unchanged lines highlighted.
Free Online Text Diff Tool
The Toolts Diff Checker compares two blocks of text and shows the differences line by line. Added lines are highlighted in green, deleted lines in red, and unchanged lines are shown in gray. This is useful for comparing code versions, checking document revisions, or verifying text changes.
How It Works
The tool splits both texts into individual lines and compares them using a longest common subsequence algorithm. Lines present only in the original are marked as deletions (red), lines present only in the changed text are marked as additions (green), and lines present in both are shown as unchanged. Line numbers help you locate specific changes quickly.